نتایج جستجو برای: beach slope
تعداد نتایج: 61841 فیلتر نتایج به سال:
background : vibrio species including v. cholera , v. mimicus , v. parahaemolyticus , and v. vulnificus may cause gastrointestinal diseases after seafood consumption, and wound infections in swimmers and fishermen after exposing to seawater. this study determined the prevalence of the four vibrio species in tonkabon and ramsar recreational beach water (approximately 200 meter far from the pla...
No one expected any problems as the Exxon Valdez left the Alyeska Pipeline Terminal at 9:12 p.m., on March 23, 1989. The 987-foot ship, second newest in Exxon Shipping Company’s 20-tanker fleet, was loaded with 53,094,510 gallons (1,264,155 barrels) of North Slope crude oil bound for Long Beach, California (State of Alaska). Tankers carrying North Slope crude oil had safely traveled the Prince ...
Beaches worldwide provide recreational opportunities to hundreds of millions of people and serve as important components of coastal economies. Beach water is often monitored for microbiological quality to detect the presence of indicators of human sewage contamination so as to prevent public health outbreaks associated with water contact. However, growing evidence suggests that beach sand can h...
The geomechanical classification SMR (Slope Mass Rating) enables the preliminary assessment of the susceptibility of rock slopes to failure. The SMR index is obtained from Bieniawski’s basic RMR (Rock Mass Rating) through an “adjustment factor” and an “excavation factor”. Since its appearance in 1985, this classification has been used for appraisals and preliminary studies in many countries. Th...
Overtopping has been widely studied to design coastal structures, and it is also an important parameter for management in order evaluate the protection by natural systems against inundation. Most formulations open coasts have estimated overtopping using wave runup (R2 percent), beach slope truncated point, with empirical coefficients account further details (e.g. EurOtop, 2018). However, beache...
Observations of runup and energy flux on a low-slope beach with high-energy, long-period ocean swell
We surveyed 579 recreationists regarding management of the threatened, beach-dwelling Hooded Plover Thinornis rubricollis. We postulated that: (1) lower awareness of the species and higher 'inconvenience' of management would engender less favourable perceptions of conservation and management; and (2) that frequency of beach use and dog ownership may mediate perceptions and levels of awareness a...
The beach hopper amphipod Talorchestia quoyana is not distributed homogeneously in its sandy beach habitat, but instead occurs in dense patches under large pieces of tidal debris. This marked patchiness on a scale of just a few metres may create a higher level of aggregation among hosts for the symbionts and parasites of beach hoppers. Prevalence of infection by a mermithid nematode parasite va...
We investigated the effectiveness of Escherichia coli community fingerprinting for identifying fecal pollution sources impacting a recreational beach. E. coli in water collected from the beach, nearby creek and storm sewer outfall were enumerated using membrane filtration, while E. coli communities were characterized following polymerase chain reaction analysis and denaturing gradient gel elect...
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